I get the same error code 39 on all Roland drivers on my Surface Book 3. The drivers are for the TR-08, TR-6S, and the MC-101. There are driver errors code 39 for all three devices. I've tried contacting Roland since November 2020 and they have not been able to solve this problem yet. If you find a solution, please lete know.
After months and months I found a solution yesterday on a thread telling me to turn off Windows Defender Core Isolation Memory Integrity.
I tried in Windows defender, but the option was not available and I was told to "contact my administrator".
Today, Roland Customer Service responded to my servixe request with.., "We have heard that this might be related to a new Windows setting called "Core Isolation".....
I then googled another way to turn off "core isolation" by going to "regedit" - "run as administrator" , then for registry key: **HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity ,**change the "Enabled" value from "1" to "0". Restart the computer.
And the error code 39 is gone. My Roland MC-101, TR-6S, and TR-08 now work on my Windows Surface Book 3. Thanks Roland and Google.